The harmful effects of soil pollution may come from direct contact with polluted soil or from contact with other resources, such as water or food which has been grown on or come in direct contact with the polluted soil.
A reason for your arm or hand falling asleep at night could be because of having a stroke. A stroke is a life-threatening emergency that happens when there is a disruption in the flow of blood to your brain. This can cause paralysis, loss of consciousness, numbness on one side of the body, and impaired speech.
1 Changes in the body's natural internal clock, causing some people to fall asleep earlier in the evening) 2  Chronic disease, such as heart failure. 3  Certain medicines, herbs, supplements, and recreational drugs.  Depression (depression is a common cause of sleep problems in people of all ages)